I'd rather see fish incorporated into other areas of the zoo than stuck in a designated aquarium building, but I'm a big advocate for zoos displaying the biodiversity of animal life- and giving visitors a look at not just mammals, birds, and reptiles, but also giving attention to amphibians, fish, and invertebrates. Furthermore, one type of ecosystem I wish more facilities would feature prominently are freshwater biomes. There are a number of freshwater turtle species and amphibian species that don't get nearly as much attention as they deserve, in my opinion, especially due to the conservation concern that these groups of animals face. I would love to see some zoos invest in some good freshwater exhibits, featuring turtles and amphibians, but also the freshwater fishes, freshwater invertebrates, waterfowl, and semi-aquatic mammals that share their homes. I'd love to see more facilities, zoos or aquariums, build major exhibits dedicated to freshwater biomes.